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प्रश्न
Fill in the blanks with suitable words .
Wave speed in metres per second equals frequency in ............ multiplied by ..................... in ..................
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उत्तर
Wave speed in meters per second equals frequency in hertz multiplied by wavelength in meters.
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संबंधित प्रश्न
Write the approximate speed of sound in air.
Can sound travel through solids and liquids ? In which of these two does it travel faster ?
A boy fires a gun and another boy at a distance of 1020 m hears the sound of firing the gun 3 s after seeing its smoke. Find the speed of sound.
A boy on a hill A fires a gun. The other boy on hill B hears the sound after 4 s. If the speed of sound is 330 m s-1, find the distance between the two hills.
What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?
A jet aircraft flies at a speed of 410 m/s. What is this speed known as?
Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her?
(The velocity of sound in air is 340 m/s.)
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
When temperature increases the speed of sound ______.
Numerical problems:
Two persons are at opposite ends of a steel rod. One strikes the end of the rod with a stone. Find the ratio of time taken by the sound wave in the air and in steel to reach the second person. (Sound of speed in steel = 5960 ms-1, Sound of speed in air = 344 ms-1).
